Have to look later (work internet filters block ebay).

Any fresh set of bushings will go a long way toward restoring the original "feel", along with new shocks and replacement of any steering/suspension component that exhibits "play" where it is not supposed to.

I don't have nearly as many problems or complaints about poly as many seem to. But I don't exactly leave them alone before installing them either.

 

Polygraphite also won't squeak because it's imbedded with graphite specifically to eliminate squeaks. I still wouldn't run it on upper spring insulators or strut rods, though.

 

A 1" bar and 620 springs without doing anything to stiffen the rear suspension will corner flat enough, but will understeer. You'll definitely want to do the Shelby drop mod so that the extra lateral load transfer that kit will pull up to the front during cornering is at least working on tires that are somewhere near a decent camber situation.

I can't tell if the spring perches are roller perches or not. Roller perches will give a better ride for any given shock/spring combination than rubber-bushed perches.

Pictures never show it, but any time that the bushing material is longer than the inner sleeve you don't really have a proper joint, and the compression in the bushing is part of what causes the squeaking. Eliminating the noise is really only part of the problem. In this respect, rubber is better than poly if the bushing material is left long, as it compresses much more easily and hence isn't as bad (the OE torque specs were based on rubber so they would have accounted for this anyway).


Norm

 

My cousin just installed that same kit on his car and he is pretty happy with it.

 

I've got 1" drop 620's with a 1" sb and 4.5 rear mid-eye in the back love it. My next move is probably the roller perches. There are some very good suspension parts out there, but be prepared to break out the visa.

 

As Norm was saying, steering and handling is very dependent on the car being balanced. Yes sway bars help eliminate body roll and keep both side of the car working together, but stock is 7/8". If you go 1" in the front without doing anything to the rear, you are throwing the steering and handling out of balance. Look into Addco swaybars. NPD sells them and will tell you what to get front and back to keep things balanced. I installed a 1 1/4" in the front and 7/8" in the rear. My car is very steering/corning neutral which can feel loose if you are used to a car that pushes (understeer). I think the last thing you would want to do is increase understeer if you are trying to improve the handling.

As for Poly bushings... I have them most everywhere except on the strut rods. I do not have a problem with squeaking, but my car is also so loud, the squeak would have to be pretty bad to bother me.

 

7/8" might be stock on GT's or later models, but it's definitely not stock on 65-68 non-GT's. My original sway bar was like 5/8". I could literally bend it in half with my hands. The 15/16" bar I replaced it with works great and is plenty stiff enough for the way I drive.

 

This is why I like this forum - excellent discussion - thanks norm, star and urban!

 

Whats the stock sway bar size on a 69 Mach1?

 

I'm guessing, but maybe 7/8".

PS: you're better off making a new thread in the future than tying into an old thread.